Product mistakenly used under the unfortunate impression that it will improve the environmental condition of the female nether-regions. In fact, the vagina is a self-cleaning organ and use of this product may hinder the "good bacteria" naturally present whose job it is to maintain a state of cleanliness. Should the vagina show signs of infection which would potentially lead to the mistaken impression that douching would be a good idea (unpleasant smell, etc.), one should seek professional medical treatment because they probably have some sort of an infection which can be cleared up properly with medication.

The use of douche, an unfortunately common practice, leads all too frequently to a disruption in the normal self-cleansing vaginal environment, resulting in repeated and worsening symptoms.

An obnoxious bastard who mooches off of family and friends and is a complete and total ass to everyone.

Will use flattery and any other means possible to get a girl;
and learn how to play parts of songs on the guitar to attract girls. Their interests change depending on the girl they date or hang out with. Music is a good example of such interest changes. They will often listen to pop or rap if the girl enjoys it. Girls seemed oddly attracted to this charade.

Often laugh at others misfortunes reguardless of its severity. Is often a cock blocker even if the tactics used will hinder their own chances of getting a girl. Must always be the center of attention even if it means doing something socially awkward.

Sometimes makes jokes in a loud voice to draw attention to themselves. Talks loudly and in a different tone to assert that he knows a lot about a specific topic.
Occasionally they will sing along to songs on the radio and look at others riding with them to make sure they are paying attention to the fact that they are singing.

They are often white males and are stereotyped for wearing 'popped collars' but this fashion is rarely seen. They most often wear a hat in an unconventional way (Such as: backwards, to one side, slightly to one side, or obnoxiously worn on one side of the head, appearing to be barely stable) Being a douche is not limited to just males.

In short a douche is a living contradiction!

Guy 1: "I don't understand how Joey has any friends, he's a total douche."